Use the table to answer the question.

Pick up Browse Total
Weekday 25 12 37
Weekend 17 45 62
Total 42 57 99
Sal kept track of how many people visited the local library and recorded their purpose for visiting. Using marginal relative frequency, what interpretation can you make from the data in the two-way table?

(1 point)
Responses

People only come to pick up reserved books during the week.
People only come to pick up reserved books during the week.

The pick-up service is not very popular at this library.
The pick-up service is not very popular at this library.

The weekend is the most popular time to visit.
The weekend is the most popular time to visit.

A high percentage of people pick up on the weekend.
A high percentage of people pick up on the weekend.
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1 answer

To analyze the marginal relative frequencies in the two-way table, we calculate the relative frequencies of each category (Pick up and Browse) for weekdays and weekends based on the total visit count.

Total Visits:

  • Weekday Total: 37
  • Weekend Total: 62
  • Overall Total: 99

Marginal Relative Frequencies for Pick Up:

  • Weekday Pick Up: \( \frac{25}{99} \) ≈ 0.2525 or 25.25%
  • Weekend Pick Up: \( \frac{17}{99} \) ≈ 0.1717 or 17.17%

Marginal Relative Frequencies for Browse:

  • Weekday Browse: \( \frac{12}{99} \) ≈ 0.1212 or 12.12%
  • Weekend Browse: \( \frac{45}{99} \) ≈ 0.4545 or 45.45%

Interpretation:

  1. About 25.25% of total visitors come to pick up books on weekdays.
  2. About 17.17% of total visitors come to pick up books on weekends.
  3. The majority of visitors (about 45.45%) come to browse the library on weekends, which indicates that browsing is much more popular than picking up reserved books.
  4. The total visits to the library on weekends (62 visits) surpass those on weekdays (37 visits), making the weekend the most popular time to visit the library.

Based on the calculated frequencies, the correct interpretation from the given options is:

The weekend is the most popular time to visit.